Finding the Fourth Proportional to 31,530.72, 43,512.69 and 17,384.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,530.72 : 43,512.69 = 17,384.10 : x
2. Step 2: Convert to fraction form
   31,530.72/43,512.69 = 17,384.10/x
3. Step 3: Cross multiply
   31,530.72x = 43,512.69 × 17,384.10
4. Step 4: Simplify right side
   31,530.72x = 756,428,954.23
5. Step 5: Solve for x
   x = 756,428,954.23/31,530.72
6. Step 6: Final answer
   x = 23,990.22